362 EDITH M. PRATT. 
Fic. 22.—Alcyonium digitatum. 
a. A portion of an endodermal cord in the mesoglcea in a living specimen. 
The cells contain ingested carmine particles. 
b. The same cord after an interval of half an hour. Two of the cells 
containing carmine are in an ameeboid condition, and are beginning 
to wander into the mesoglea. x 547 (cam. luc.). 
Fic. 23.—Sclerophytum densum. 
a. Group of endodermal canal cells, one of which is in an ameboid 
condition, and has an extremely long, branched pseudopodium 
thrust into the mesoglea. (Compare with fig. 25.) x 800 
(cam. luc.). 
4and ¢ are ameeboid endoderm cells which have wandered into mesoglea. 
x 800 (cam. luc.). 
All from stained preparations. 
Fie. 24.—Alcyonium digitatum. Living ameboid cells of mesogleal 
plexus containing particles of carmine. These have hitherto been known as 
nerve cells. X 717 (cam. luc.). 
